Victoria Bloom Dimitrios Makris 0001 Vasileios Argyriou Clustered Spatio-temporal Manifolds for Online Action Recognition. 3963-3968 2014 ICPR https://doi.org/10.1109/ICPR.2014.679 https://doi.ieeecomputersociety.org/10.1109/ICPR.2014.679 conf/icpr/2014 db/conf/icpr/icpr2014.html#BloomMA14